Callahan, J. F., Clark, L. H., & Kellough, R. D. (2002). Teaching in the middle and secondary schools (7th ed.). Merrill.
Chicago Style (17th ed.) CitationCallahan, Joseph F., Leonard H. Clark, and Richard D. Kellough. Teaching in the Middle and Secondary Schools. 7th ed. Upper Saddle River, N.J.: Merrill, 2002.
ציטוט MLACallahan, Joseph F., et al. Teaching in the Middle and Secondary Schools. 7th ed. Merrill, 2002.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.